Board logo

标题: 天山5-22 [打印本页]

作者: ghfgss231    时间: 2005-8-27 05:27     标题: 天山5-22


看到这个题还没有人问,

Q22

When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 3 times, what is the probability that it will land on the same side each time?

A. 1/8

B.1/4

C.1/3

D.3/8

E 1/2

多谢!


作者: smart    时间: 2005-8-27 18:38

我选A。

考的是事件的独立性.


作者: apply1    时间: 2005-8-28 20:27

(1/2)^3*2=1/4




欢迎光临 国际顶尖MBA申请交流平台--TOPWAY MBA (http://forum.topway.org/) Powered by Discuz! 7.2